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<title>Simulating Input Events</title>
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          <h1 class="mb-0 p-1 ">GoJS</h1>
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    <!-- Start of GoJS sample code -->
    
    <script src="../release/go.js"></script>
    <div class="p-4 w-full">
<script src="Robot.js"></script>

<script id="code">
  var robot;  // this global variable will hold an instance of the Robot class for myDiagram

  function init() {
    if (window.goSamples) goSamples();  // init for these samples -- you don't need to call this
    var $ = go.GraphObject.make;  // for conciseness in defining templates

    function showProperties(e, obj) {  // executed by ContextMenuButton
      var node = obj.part.adornedPart;
      var msg = "Context clicked: " + node.data.key + ". ";
      msg += "Selection includes:";
      myDiagram.selection.each(function(part) {
        msg += " " + part.toString();
      });
      document.getElementById("myStatus").textContent = msg;
    }

    function nodeClicked(e, obj) {  // executed by click and doubleclick handlers
      var evt = e.copy();
      var node = obj.part;
      var type = evt.clickCount === 2 ? "Double-Clicked: " : "Clicked: ";
      var msg = type + node.data.key + ". ";
      document.getElementById("myStatus").textContent = msg;
    }

    myDiagram =
      $(go.Diagram, "myDiagramDiv",  // must name or refer to the DIV HTML element
        {
          nodeTemplate:
            $(go.Node, "Auto",
              {
                click: nodeClicked,
                doubleClick: nodeClicked,
                contextMenu:
                  $("ContextMenu",
                    $("ContextMenuButton",
                      $(go.TextBlock, "Properties"),
                      { click: showProperties })
                  )
              },
              $(go.Shape, "Rectangle",
                { fill: "lightgray" },
                { portId: "", fromLinkable: true, toLinkable: true, cursor: "pointer" }),
              $(go.TextBlock,
                { margin: 3 },
                new go.Binding("text", "key"))),
          model: new go.GraphLinksModel([
            { key: "Lambda" },
            { key: "Mu" }
          ], [
              { from: "Lambda", to: "Mu" }
            ]),
          "undoManager.isEnabled": true
        });

    // a shared Robot that can be used by all commands for this one Diagram
    robot = new Robot(myDiagram);  // defined in Robot.js

    // initialize the Palette that is on the left side of the page
    myPalette =
      $(go.Palette, "myPaletteDiv",  // must name or refer to the DIV HTML element
        {
          nodeTemplate: myDiagram.nodeTemplate,
          model: new go.GraphLinksModel([  // specify the contents of the Palette
            { key: "Alpha" },
            { key: "Beta" },
            { key: "Gamma" },
            { key: "Delta" }
          ])
        });
  }

  function dragFromPalette() {
    // simulate a drag-and-drop between Diagrams:
    var dragdrop = { sourceDiagram: myPalette, targetDiagram: myDiagram };
    robot.mouseDown(5, 5, 0, dragdrop);  // this should be where the Alpha node is in the source myPalette
    robot.mouseMove(60, 60, 100, dragdrop);
    robot.mouseUp(100, 100, 200, dragdrop);  // this is where the node will be dropped in the target myDiagram
    // If successful in dragging a node from the Palette into the Diagram,
    // the DraggingTool will perform a transaction.
  }

  function copyNode() {
    var alpha = myDiagram.findNodeForKey("Alpha");
    if (alpha === null) return;
    var loc = alpha.actualBounds.center;

    var options = { control: true, alt: true };
    // Simulate a mouse drag to move the Alpha node:
    robot.mouseDown(loc.x, loc.y, 0, options);
    robot.mouseMove(loc.x + 80, loc.y + 50, 50, options);
    robot.mouseMove(loc.x + 20, loc.y + 100, 100, options);
    robot.mouseUp(loc.x + 20, loc.y + 100, 150, options);
    // If successful, will have made a copy of the "Alpha" node below it.

    // Alternatively you could copy the Node using commands:
    // myDiagram.commandHandler.copySelection();
    // myDiagram.commandHandler.pasteSelection(new go.Point(loc.x+20, loc.y+100));
  }

  function dragSelectNodes() {
    var alpha = myDiagram.findNodeForKey("Alpha");
    if (alpha === null) return;
    var alpha2 = myDiagram.findNodeForKey("Alpha2");
    if (alpha2 === null) return;
    var coll = new go.Set();
    coll.add(alpha);
    coll.add(alpha2);
    var area = myDiagram.computePartsBounds(coll);
    area.inflate(30, 30);

    // Simulate dragging in the background around the two Alpha nodes.
    // This uses timestamps to pretend to wait a while to avoid activating the PanningTool.
    // Hopefully this mouse down does not hit any Part, but in the Diagram's background:
    robot.mouseDown(area.x, area.y, 0);
    // NOTE that this mouseMove timestamp needs to be > myDiagram.toolManager.dragSelectingTool.delay:
    robot.mouseMove(area.centerX, area.centerY, 200);
    robot.mouseUp(area.right, area.bottom, 250);
    // Now should have selected both "Alpha" and "Alpha2" using the DragSelectingTool.

    // Alternatively you could select the Nodes programmatically:
    // alpha.isSelected = true;
    // alpha2.isSelected = true;
  }

  function clickContextMenu() {
    var alpha = myDiagram.findNodeForKey("Alpha");
    if (alpha === null) return;
    var loc = alpha.location;

    // right click on Alpha
    robot.mouseDown(loc.x + 10, loc.y + 10, 0, { right: true });
    robot.mouseUp(loc.x + 10, loc.y + 10, 100, { right: true });

    // Alternatively you could invoke the Show Context Menu command directly:
    // myDiagram.commandHandler.showContextMenu(alpha);

    // move mouse over first context menu button
    robot.mouseMove(loc.x + 20, loc.y + 20, 200);
    // and click that button
    robot.mouseDown(loc.x + 20, loc.y + 20, 300);
    robot.mouseUp(loc.x + 20, loc.y + 20, 350);
    // This should have invoked the ContextMenuButton's click function, showProperties,
    // which should have put a green message in the myStatus DIV.
  }

  function deleteSelection() {
    // Simulate clicking the "Del" key:
    robot.keyDown("Del");
    robot.keyUp("Del");
    // Now the selected Nodes are deleted.

    // Alternatively you could invoke the Delete command directly:
    // myDiagram.commandHandler.deleteSelection();
  }

  function clickLambda() {
    var lambda = myDiagram.findNodeForKey("Lambda");
    if (lambda === null) return;
    var loc = lambda.location;

    // click on Lambda
    robot.mouseDown(loc.x + 10, loc.y + 10, 0, {});
    robot.mouseUp(loc.x + 10, loc.y + 10, 100, {});

    // Clicking is just a sequence of input events.
    // There is no command in CommandHandler for such a basic gesture.
  }

  function doubleClickLambda() {
    var lambda = myDiagram.findNodeForKey("Lambda");
    if (lambda === null) return;
    var loc = lambda.location;

    // double-click on Lambda
    robot.mouseDown(loc.x + 10, loc.y + 10, 0, {});
    robot.mouseUp(loc.x + 10, loc.y + 10, 100, {});
    robot.mouseDown(loc.x + 10, loc.y + 10, 200, { clickCount: 2 });
    robot.mouseUp(loc.x + 10, loc.y + 10, 300, { clickCount: 2 });
  }
  window.addEventListener('DOMContentLoaded', init);
</script>

<div id="sample">
  <div style="width: 100%; display: flex; justify-content: space-between">
    <div id="myPaletteDiv" style="width: 80px; height: 400px; margin-right: 2px; border: solid 1px black"></div>
    <div id="myDiagramDiv" style="flex-grow: 1; height: 400px; border: solid 1px black"></div>
  </div>
  <p>
  To simulate mouse events the buttons below use the <b>Robot</b> class that is defined in <a href="Robot.js">Robot.js</a>.
  </p>
  <p>
  Click these buttons in order from top to bottom:<br />
  <button onclick="dragFromPalette()">Drag From Palette</button><br />
  <button onclick="copyNode()">Copy Node</button><br />
  <button onclick="dragSelectNodes()">Drag Select Nodes</button><br />
  <button onclick="clickContextMenu()">Context Menu Click Alpha</button><br />
  <button onclick="deleteSelection()">Delete</button><br />
  </p>
  <p>Clicking operations:<br />
  <button onclick="clickLambda()">Click Lambda</button><br />
  <button onclick="doubleClickLambda()">Double Click Lambda</button><br />
  </p>
  <p>
  The <a>UndoManager</a> has been enabled in the main Diagram.
  Give focus to the Diagram and you can undo everything and then redo everything to confirm what was executed by the Robot.
  </p>
  <div id="myStatus" style="color:green"></div>
</div>
    </div>
    <!-- * * * * * * * * * * * * * -->
    <!--  End of GoJS sample code  -->
  </div>
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